Cognomen Bierregaard (Bierregaard 
) , worldwide, is a very rare surname. The cognomen Bierregaard is habitual in Denmark, where it is quite a rare surname, Argentina, where it is a very rare surname, and Canada, where it is an extremely rare surname. In absolute terms, it is the most numerous in Denmark, Argentina, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Bierregaard | Brazil, Argentina, Canada, Denmark, United States |
| niels mortensen bierregaard (b. 1759) |
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| richard o bierregaard researcher |
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